noun pen·ta·methylene \"+\

Definition of pentamethylene

  1. 1 :  cyclopentane

  2. 2 :  the bivalent radical −CH2CH2CH2CH2CH2− derived from normal pentane by removal of one hydrogen atom from each end carbon atom

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Origin and Etymology of pentamethylene

International Scientific Vocabulary penta- + methylene

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a brief usually trivial fact

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